Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
One ragweed plant can release as many as one billion grains of pollen!
51
Iron weighs more after it rusts.
16